Impedance Plethysmography Based Deep Vein Thrombosis Monitoring During Catheter-directed Thrombolysis
The purpose of this study is to collect data on blood circulation using a multi-frequency impedance plethysmography device developed in the ThrombUS+ project. Impedance plethysmography (IPG) is a non-invasive method that measures changes in blood volume using electrodes placed on the skin. The collected data will be used for device development, the improvement of diagnostic data analysis methods, and AI training.
A total of 40 participants will be recruited for this study, with 20 healthy volunteers in Tampere University and 20 patients undergoing thrombolytic therapy for DVT at Tampere University Hospital.
Studienübersicht
Status
Status
Bedingungen
Bedingungen
Intervention / Behandlung
Intervention / Behandlung
Detaillierte Beschreibung
This study aims to collect IPG data set from healthy volunteers and DVT patients using ThrombUS+ prototype device developed during the project and commercial IPG device as a reference. The data will be used to develop ThrombUS+ IPG device, its signal processing and analysis algorithms and to train ML models.
Objectives of the study are to
- Collect IPG data for developing signal processing, data analysis and ML algorithms for DVT detection and assessment.
- Evaluate the performance of the developed methods to gold standard references including angiography, ultrasound imaging and venous occlusion plethysmography.
- Investigate whether multi-frequency IPG measurement improves the performance of DVT detection compared to single frequency measurement and determine the optimal measurement frequency.
- Investigate and compare different interventions to cause changes in venous blood volume for DVT detection, such as venous occlusion by thigh cuff, active respiration and muscle activation.
Secondary objectives are
1) To investigate methods for simulating DVT and to compare the performance of these methods for DVT simulation.
Studientyp
Studientyp
Einschreibung (Geschätzt)
Einschreibung
Kontakte und Standorte
Studienkontakt
Studienkontakt
- Name: Vehkaoja
- Telefonnummer: +358407393181
- E-Mail: antti.vehkaoja@tuni.fi
Studienorte
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Tampere, Finnland
- Rekrutierung
- Tampere University Hospital
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Kontakt:
- Oksala
- Telefonnummer: +3583311611
- E-Mail: niku.oksala@tuni.fi
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Tampere, Finnland
- Abgeschlossen
- Tampere University
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Teilnahmekriterien
Zulassungskriterien
Zulassungskriterien
Studienberechtigtes Alter
- Erwachsene
- Älterer Erwachsener
Akzeptiert gesunde Freiwillige
Probenahmeverfahren
Studienpopulation
Beschreibung
Inclusion Criteria for Patients group:
- Age: 18 or older;
- DVT detected on other lower limb;
- Suitable for CDT treatment;
- Ability to give informed consent;
- Volunteering for the study.
Exclusion Criteria for Patients group:
- Age under 18 years;
- Inability to give informed consent;
- Denial;
- Too injured skin in the measurement area
Inclusion Criteria for Healthy volunteers group:
- Age: 18 or older;
- Ability to give informed consent;
- Volunteering for the study
Exclusion Criteria for Healthy volunteers group:
- Diagnosed DVT in lower limbs;
- Age under 18 years;
- Inability to give informed consent;
- Denial;
- Too injured skin in the measurement area.
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
Anzahl der Gruppen / Kohorten
Kohorten und Interventionen
Gruppe / KohorteGruppe / Kohorte |
Intervention / BehandlungIntervention / Behandlung |
|---|---|
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Gesunde Freiwillige
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IPG signal is measured with ThrombUS+ prototype device
Andere Namen:
In VOP measurement, a temporal blood restriction is caused by an occlusive cuff blocking venous outflow but allowing arterial inflow.
The cuff intervention causes a change in venous blood volume, and it can be measured by electrical impedance plethysmography (IPG).
Andere Namen:
The first exercise is the Valsalva maneuver, where the subject first inhales and then pushes out the breath while the larynx is closed.
In the second exercise, the subject inhales for approximately 10 seconds, holds the breath for approximately 5 seconds, and then breathes out.
Finally, the subject moves the ankles to contract calf muscles, and further to cause changes in venous blood volume.
The IPG signal is measured on both calves by ThrombUS+ prototype device during these exercises.
Andere Namen:
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Patients
DVT detected on other lower limb, undergoing catheter-directed thrombolysis
|
IPG signal is measured with ThrombUS+ prototype device
Andere Namen:
In VOP measurement, a temporal blood restriction is caused by an occlusive cuff blocking venous outflow but allowing arterial inflow.
The cuff intervention causes a change in venous blood volume, and it can be measured by electrical impedance plethysmography (IPG).
Andere Namen:
The first exercise is the Valsalva maneuver, where the subject first inhales and then pushes out the breath while the larynx is closed.
In the second exercise, the subject inhales for approximately 10 seconds, holds the breath for approximately 5 seconds, and then breathes out.
Finally, the subject moves the ankles to contract calf muscles, and further to cause changes in venous blood volume.
The IPG signal is measured on both calves by ThrombUS+ prototype device during these exercises.
Andere Namen:
|
Was misst die Studie?
Primäre Ergebnismessungen
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Zeitfenster |
|---|---|
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Impedance plethysmography (IPG) data during CDT treatment
Zeitfenster: From enrollment to the end of the CDT treatment (up to 2 days)
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From enrollment to the end of the CDT treatment (up to 2 days)
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Impedance plethysmography (IPG) data from healthy volunteers
Zeitfenster: From enrollment to the end of measurements (up to 2 hours)
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From enrollment to the end of measurements (up to 2 hours)
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Mitarbeiter und Ermittler
Sponsor
Sponsor
Mitarbeiter
Mitarbeiter
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Tatsächlich)
Studienbeginn
Primärer Abschluss (Geschätzt)
Primärer Abschluss
Studienabschluss (Geschätzt)
Studienabschluss
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Zuerst gepostet
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes Update gepostet
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
- Gefäßerkrankungen
- Herz-Kreislauf-Erkrankungen
- Embolie und Thrombose
- Thrombose
- Venöse Thrombose
- Diagnosetechniken und Verfahren
- Diagnose
- Kreisende und respiratorische physiologische Phänomene
- Diagnosetechniken, Atemsystem
- Respiratorische physiologische Phänomene
- Diagnosetechniken, kardiovaskulär
- Herzfunktionstests
- Atemfunktionstests
- Elektrodiagnose
- Hämodynamik
- Kardiovaskuläre physiologische Phänomene
- Plethysmographie
- Atmung
- Valsalva-Manöver
- Plethysmography, Impedance
Andere Studien-ID-Nummern
Andere Studien-ID-Nummern
- ThrombUS+B4
Plan für individuelle Teilnehmerdaten (IPD)
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Arzneimittel- und Geräteinformationen, Studienunterlagen
Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt
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